I put some of these in my garden this spring from a sedum tile and this one is by far my favorite but it seems a little tougher to get to spread vs the others
Looks like tiny stones, the bag says "insoluble crushed granite". I believe it gets mixed with chicken food to aid in digestion? Here's a link www.tractorsupply.com/tsc/product/manna-pro-poultry-grit-25-lb
